A Survey of Indigenous Tropical Legumes of Puerto Rico

A search was conducted in Puerto Rico for nodulated indigenous tropical legumes which show possible potential for agricultural purposes. Forty nine such legume species were encountered, of which 13 were new records for nodulation. Descriptions are given for the rhizobial nodules on the 49 species and agronomic observations on the growth habits of the plants and their habitats are furnished.

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Biodiversity of Heteroptera in Puerto Rico: Part III. Conspectus of Pentatomomorpha: Aradoidea, Pyrrhocoroidea, Coreoidea, and Concluding Notes on Endemism and Biogeography

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v105i4.19295 ◽

2021 ◽

pp. 1-102

Author(s):

Alejandro E. Segarra-Carmona ◽

Rosa A. Franqui ◽

Hariette Pérez-Martínez

Keyword(s):

Puerto Rico ◽

Puerto Rican ◽

West Indies ◽

Host Plants ◽

New Records ◽

Final Part ◽

The West ◽

Island Endemics

Superfamilies Aradoidea, Pyrrhocoroidea and Coreoidea from Puerto Rico are discussed as part of an updated account of Hemiptera: Heteroptera. In this final part, we present 48 species belonging to the three superfamilies, with six families known from Puerto Rico: Aradoidea: Aradidae (12); Pyrrhocoroidea: Largidae (1) and Pyrrhocoridae (3); and Coreoidea: Alydidae (5), Rhopalidae (7) and Coreidae (20). Taxonomic accounts presented here include synonymies, known distribution, lists of host plants and a listing of examined specimens. Taxonomical keys are also provided for the identification of all taxa included. Color plates for 43 species are included. Five species are new records for Puerto Rico: Brachyrhynchus membranaceus (F.), Leptoglossus confusus Alayo and Grillo, Eubule scutellata (Westwood), Mamurius cubanus Barber and Bruner, and Merocoris typhaeus (F.). Most species are widespread in the West Indies, with the largest number of island endemics in the Aradidae. A discussion of the origins, biodiversity, biogeography, and endemism of all Puerto Rican Pentatomomorpha is presented.

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Myzus persicae (Sulzer) in Puerto Rico

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v42i4.12607 ◽

1969 ◽

Vol 42 (4) ◽

pp. 263-266

Author(s):

Clyde F. Smith ◽

L. F. Martorell ◽

M. E. Pérez-Escolar

Keyword(s):

Puerto Rico ◽

Host Plant ◽

Myzus Persicae ◽

New Records ◽

Green Peach Aphid ◽

Virus Diseases ◽

Made In

The green peach aphid, Myzus persicae Sulzer, is a pest of tobacco in Puerto Rico. This insect is also a vector of virus diseases transmitted from pepper to tobacco and vice-versa. During a survey made in Puerto Rico by the authors, the known host-plant list of this insect was greatly increased by adding around 15 new records.

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NEW RECORDS OF PARASITOIDS OF ACULEATE HYMENOPTERA IN PUERTO RICO

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v84i1-2.3907 ◽

1969 ◽

Vol 84 (1-2) ◽

pp. 99-100

Author(s):

Juan A. Torres ◽

Roy R. Snelling ◽

Miguel Canals

Keyword(s):

Puerto Rico ◽

New Records

NEW RECORDS OF PARASITOIDS OF ACULEATE HYMENOPTERA IN PUERTO RICO

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Flavour differences in meat from lambs grazed on tropical legumes

The Journal of Agricultural Science ◽

10.1017/s0021859600025831 ◽

1972 ◽

Vol 79 (3) ◽

pp. 473-478 ◽

Cited By ~ 12

Author(s):

R. J. Park ◽

D. J. Minson

Keyword(s):

Significant Influence ◽

Taste Panel ◽

Panicum Maximum ◽

Legume Species ◽

Low Intensity ◽

Tropical Legume ◽

Lamb Meat ◽

Tropical Legumes ◽

Significant Difference

SUMMARYDorset Horn × Merino and Corriedale wether lambs grazed one of four tropical legume species or the grass Panicum maximum for up to 4 months in the immediate pre-slaughter period. A laboratory taste panel compared the flavour of the meat from legume-fed lambs with that from corresponding grass-fed lambs.Lamb meat from animals grazed for up to 15 weeks on Siratro (Phaseolus atropurpureus) was not significantly different from the control meat in any flavour property, while showing a slight but insignificantly greater degree of acceptability of flavour.The meat from lambs grazed for up to 6 weeks on Silverleaf desmodium (Desmodium uncinatum) showed no significant difference from the control meat in flavour properties except for a slightly greater intensity (P < 0·05) of an uncharacterized aroma.The meat from lambs grazed on Dolichos axillaris for up to 4 months occasionally exhibited a characteristic and sometimes objectionable odour and flavour. However, this characteristic flavour had no significant influence on the acceptability of the meat.The meat from lambs grazed on Glycine wightii for up to 6 weeks exhibited a characteristic and objectionable odour and flavour (P < 0·001). After 4 months of grazing the intensity of this flavour was considerably reduced. A low intensity of this flavour was also found in a group grazed for 4 weeks in the previous year, indicating a variability in the tainting properties of this legume.

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Aquatic fungi from estuaries in Puerto Rico: Mouth of the Manatí River

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v89i1-2.1073 ◽

1969 ◽

Vol 89 (1-2) ◽

pp. 97-105

Author(s):

Ángel M. Nieves-Rivera ◽

Carlos J. Santos-Flores

Keyword(s):

Puerto Rico ◽

New Records ◽

River Mouth ◽

Aquatic Fungi ◽

Beach Sand ◽

Mitosporic Fungi ◽

Balsa Wood ◽

Organic Debris ◽

Fungal Isolates ◽

Eleven Species

Aquatic fungi were isolated from sea foam, leaf litter, beach sand, and driftwood in an estuary known as "La Boca" (river mouth) of the Manatí River in Barceloneta, northern Puerto Rico. Observations of the baits (sterilized balsa wood) and incubated organic debris, revealed the presence of 28 species of aquatic fungi, 13 of which belong to the ascomycetes and 15 to the mitosporic fungi. The species Arenariomyces triseptatus, Corollospora cf. colossa, C. filiformis, Halosphaeria sp., Kirschsteiniothelia sp., Astrosphaeriella aff. mangrovei, Torpedospora radiata (Ascomycota), Brachiosphaera tropicalis, Campylospora sp., and Clavatospora bulbosa (Mitosporic fungi) were the most common in the samples. Eleven species are new records for Puerto Rico; six fungal isolates could not be identified.

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NINE NEW RECORDS OF COLLEMBOLA (INSECTA) FROM PUERTO RICO AND THE FIRST RECORD OF THE ORDER FROM TORTOLA, BRITISH WEST INDIES

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v61i3.10444 ◽

1969 ◽

Vol 61 (3) ◽

pp. 405-408 ◽

Cited By ~ 1

Author(s):

José A. Mari Mutt

Keyword(s):

Puerto Rico ◽

West Indies ◽

New Records ◽

First Record ◽

British West Indies

NINE NEW RECORDS OF COLLEMBOLA (INSECTA) FROM PUERTO RICO AND THE FIRST RECORD OF THE ORDER FROM TORTOLA, BRITISH WEST INDIES

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NEW RECORDS OF NATURAL ENEMIES OF THE PEPPER WEEVIL, ANTHONOMUS EUGENII CANO (COLEOPTERA: CURCULIONIDAE), IN PUERTO RICO

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v87i1-2.1131 ◽

1969 ◽

Vol 87 (1-2) ◽

pp. 69-72 ◽

Cited By ~ 1

Author(s):

Eduardo Correa-Galíndez ◽

Arístides Armstrong ◽

Carlos Cruz ◽

Edwin Abreu

Keyword(s):

Puerto Rico ◽

Natural Enemies ◽

New Records ◽

Parasitoid Species ◽

Anthonomus Eugenii ◽

Pepper Weevil

Two parasitoid species (Catolaccus hunteri and Urosigalphus mexicanus) were recovered from the larvae of A. eugenii from samples collected at Lajas, Puerto Rico.

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Plant growth on a low calcium status solodic soil in a subtropical environment

Australian Journal of Agricultural Research ◽

10.1071/ar9660673 ◽

1966 ◽

Vol 17 (5) ◽

pp. 673 ◽

Cited By ~ 3

Author(s):

JS Russell

Keyword(s):

Plant Growth ◽

Soil Conditions ◽

Tropical Species ◽

Legume Species ◽

Tropical Regions ◽

Low Calcium ◽

Tropical Legumes ◽

Calcium Status ◽

Legume Growth ◽

Subtropical Environment

The importance of calcium in legume growth and soil fertility in temperate regions is well known, but there is evidence that in tropical regions adequate legume growth may be obtained under conditions of low calcium status. These differences require further elucidation for a subtropical environment, particularly as both temperate and tropical species occur and climatic conditions are transitional between temperate and tropical regions. Large areas of solodic soils of very low calcium status occur in southern Queensland. Volunteer plant growth is poor and sparse. In considering the use of legume species to increase the amount of nitrogen in the soil–plant system the possible effect of low calcium status assumes importance. Investigations were carried out on a solodic soil from Tara, Trifolium repens L. and Phaseolus lathyroides L. being used as representative of temperate and tropical legumes respectively. Initial nutrient studies showed an extreme phosphorus deficiency. Even with adequate phosphorus supplied as sodium dihydrogen phosphate, however, yield of the temperate legume was poor. This was due to the existence of soil conditions which could be ameliorated by the application of calcium carbonate (lime). Interactions between legume species, nutrient elements, and lime were observed. Lime with zinc substantially increased the yield of T. repens. Smaller increases were obtained with P. lafhyroides; in the absence of zinc, lime depressed the yield of this species. The sulphur treatment decreased soil pH, but a positive lime=sulphur yield interaction was obtained. A copper deficiency in T. repens uncomplicated by lime interaction was found. There was no evidence of molybdenum deficiency or of a molybdenum-lime interaction. The beneficial effects of lime are considered to be associated with both calcium deficiency and mineral element toxicity. The possible effect of climatic factors on both zinc deficiency and aluminium toxicity in relation to temperate and tropical legumes is discussed. A range of 48 species and strains of temperate legumes also showed marked responses to lime on this solodic soil, although differences were observed between species and genera. The role of calcium in superphosphate and the multiplicity of effects associated with the use of this fertilizer emphasize the difficulty of interpreting field responses and of attributing response to any one factor.

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Performance of New Sugarcane Varieties in the Southern Irrigated Coastal Plains of Puerto Rico

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v64i4.10183 ◽

1969 ◽

Vol 64 (4) ◽

pp. 379-390

Author(s):

Víctor C. Godreau ◽

Carlos L. González Molina ◽

Angel Vidal Méndez

Keyword(s):

Puerto Rico ◽

Juice Quality ◽

Sugar Production ◽

Coastal Plains ◽

Industry Data ◽

Sugarcane Varieties ◽

New Varieties ◽

Recorded Data ◽

Growth Habits ◽

Sugarcane Industry

Sixty sugarcane varieties, sorted in five experiments, were grown in the South Coastal plains for performance evaluation. Experiments were located at Guayanilla farm, at Union and Cintrona farms in Ponce, and at Florida and Centro farms in the Salinas-Santa Isabel area. Experiments were planted and cultivated following the standard practice of the sugarcane industry. Data on rendiments and tons of cane and of sugar per acre were recorded for the plant cane and two ratoon crops of each experiment. Other agronomic characteristics such as growth habits, stooling and ratooning ability, and fiber content were also recorded. Data of the three crops were statistically analyzed for rendiments, TCA and TSA. PR 63-488, CP 52-43 and PR 63-525 were the most promising varieties in the Guayanilla area. Although they did not produce significantly more sugar than the checks, they are better suited to mechanized harvesting. PR 61-632, PR 63-525 and PR 64-1791 were the most promising in the Ponce area (Centro and Cintrona farms) because of their higher sugar yields and their harvestability characteristics. PR 61-632, PR 1152, PR 63-525, PR 64-1791 and PR 1124 were promising in the Salinas-Santa Isabel area. With these new varieties, cost of sugar production is lower than with the old commercial varieties, which are unsuited to mechanized harvesting and have poor juice quality.

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